The truth must be living, “living” here is meant as opposed to mere art, or something forced together by our judgment. There is a source within what is true keeping it one. Falsehoods can be put together, and they can be put together even very solidly, but just as any work of art by its own nature will on its own tend to corruption, so too each falsehood corrupts and fades. The Parthenon or Colliseum we look at each has faded splendor, but the roses we look at look the same as the ones Virgil wrote on.